Evidence map›Paper›PMID 19726691›Full record

ArticleThe Journal of biological chemistry2009

Modification of high density lipoprotein by myeloperoxidase generates a pro-inflammatory particle.

Arundhati Undurti, Ying Huang, Joseph A Lupica, Jonathan D Smith, Joseph A DiDonato, Stanley L Hazen

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 126 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
126citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

126 citing papers in PubMed, 1 synthesis or guideline pooled it, 265 citations in OpenAlex.

  1. Pooled it
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  8. Reduced antioxidant high-density lipoprotein function in heart failure with preserved ejection fraction.Clinical research in cardiology : official journal of the German Cardiac Society · 2026
    Observational
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  20. Observational

66 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Arundhati UndurtiDepartment of Cell Biology, Cleveland Clinic, Cleveland, Ohio 44195, USA.
Ying Huang
Joseph A Lupica
Jonathan D Smith
Joseph A DiDonato
Stanley L Hazen
Cleveland Clinic · USCase Western Reserve University · US

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM007250 · NIGMS · CASE WESTERN RESERVE UNIVERSITY · PI HUANG, ALEX YEE-CHEN · 1985 to 2023
$33.4M
Structural Determinants Of Ceruloplasmin Inflammatory ActivityP01HL076491 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI HOOVER-PLOW, JANE LEE · 2004 to 2019
$27.3M
The Role of Thrombospondins in AtherothrombosisP50HL077107 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI PLOW, EDWARD FRANKLIN · 2005 to 2009
$16.5M
REGULATION OF MONOCYTE 15-LIPOXYGENASE EXPRESSIONP01HL087018 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI MCINTYRE, THOMAS M · 2007 to 2011
$11.4M
Case Western Reserve University/Cleveland Clinic CTSA (KL2)KL2RR024990 · NCRR · CASE WESTERN RESERVE UNIVERSITY · PI DAVIS, PAMELA B · 2007 to 2011
$9.5M
Macrophage lipid efflux and atherosclerosisR01HL066082 · NHLBI · ROCKEFELLER UNIVERSITY · PI SMITH, JONATHAN D · 2001 to 2008
$2.7M
NCRR NIH HHS 1KL2RR024990NCRR NIH HHS KL2 RR024990NHLBI NIH HHS P01 HL076491-055328NHLBI NIH HHS P01 HL077107-050004NHLBI NIH HHS P01 HL087018-02001NHLBI NIH HHS R01 HL066082NIGMS NIH HHS T32 GM007250NIGMS NIH HHS T32 GM07250
6 · The paper itself

Abstract

High density lipoprotein (HDL) is the major atheroprotective particle in plasma. Recent studies demonstrate that myeloperoxidase (MPO) binds to HDL in vivo, selectively targeting apolipoprotein A1 (apoA1) of HDL for oxidative modification and concurrent loss in cholesterol efflux and lecithin cholesterol acyl transferase activating activities, generating a "dysfunctional HDL" particle. We now show that (patho)physiologically relevant levels of MPO-catalyzed oxidation result in loss of non-cholesterol efflux activities of HDL including anti-apoptotic and anti-inflammatory functions. One mechanism responsible is shown to involve the loss of modified HDL binding to the HDL receptor, scavenger receptor B1, and concurrent acquisition of saturable and specific binding to a novel unknown receptor independent of scavenger receptors CD36 and SR-A1. HDL modification by MPO is further shown to confer pro-inflammatory gain of function activities as monitored by NF-kappaB activation and surface vascular cell adhesion molecule levels on aortic endothelial cells exposed to MPO-oxidized HDL. The loss of non-cholesterol efflux activities and the gain of pro-inflammatory functions requires modification of the entire particle and can be recapitulated by oxidation of reconstituted HDL particles comprised of apoA1 and nonoxidizable phosphatidylcholine species. Multiple site-directed mutagenesis studies of apoA1 suggest that the pro-inflammatory activity of MPO-modified HDL does not involve methionine, tyrosine, or tryptophan, oxidant-sensitive residues previously mapped as sites of apoA1 oxidation within human atheroma. Thus, MPO-catalyzed oxidation of HDL results not only in the loss of classic atheroprotective reverse cholesterol transport activities of the lipoprotein but also both the loss of non-cholesterol efflux related activities and the gain of pro-inflammatory functions.

Indexed as

Protein Processing, Post-TranslationalAnimalsApolipoprotein A-ICell LineHumansInflammation MediatorsLipoproteins, HDLMiceMice, Inbred C57BLMice, KnockoutOxidation-ReductionPeroxidaseProtein BindingReceptors, LipoproteinApolipoprotein A-Ihigh density lipoprotein receptorsInflammation MediatorsLipoproteins, HDLPeroxidaseReceptors, Lipoprotein

Identifiers

PMID19726691
PMCPMC2781481
OpenAlexW2143967889

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.